What is Latency?
What is Latency? KB ID 0001874 What is Latency? I hear people use the word ‘Latency’ a lot, mostly without ever really understanding what it is, unlike its close relations bandwidth and thoughput* which are measurments of data, latency is a measurment of TIME, and in a lot scenarios is variable depending on what’s happening. *Note: Too low bandwidth and thoughput can increase latency. There will always be latency,...
What are IOPS?
What are IOPS KB ID 0001833 My IOPS History I was on a call this morning where the IOPS (Input / Output Operations Per Second) were being discussed. I have a love / hate relationship with IOPS insofar as they are ONLY any use when you are comparing apples with apples, and more importanly (which is the bit we don’t talk about) that we have defined what an apple is. Because one mans Golden Delicious is another mans Bramley cooking...
SBS – Alert – ‘The following disk has low idle time’
KB ID 0000583 Problem I got this alert forwarded to me, from a client that I’d put in new hard drives for a few week ago. Alert: The following disk has low idle time, which may cause slow response time when reading or writing files to the disk. Disk: {Number} {Drive Letter}: Review the Disk Transfers/sec and % Idle Time counters for the PhysicalDisk performance object. If the Disk Transfers/sec counter is consistently below 150...